Forged blank fob fuse-bodies



enemies Jooxivrns, -oF.lmsov'iirnJ CONNECTICUT.

ronden BLANK Een rose-BODIES.

, Speccationvofiletters Patent.

Patented July 4, 1916.

A Application filed February 3, 1916. Serial No. 76,016..

To fzll'ackomifit mayconcfcrn: v

Be ity known thatI, CinxnLi-:s H. .Tocnnrns, a; .ci tizen of the United. States, residing. at

Connecticut., have mventedanlmprovement for Fusevodiegof which in Forged Blanks the f ollowing'is aspecitication.

This invention' relates to the manufacture of the -bodies for time fuses for Shells, and has for its object to produce a novel configuration of blanks for fuse bodies which may be forged to approximately the h'nal form, willv require a minimum amount of metal, there being no waste or lost pieces, other than the metal necessarily removed by the f-.

various machiningoperations, and which per-mits either end of the blank to be gripped easily and conveniently for machining purposes` so that there is no loss of time in handling, as either end of the blank may be' gripped perfectly rigidly by a chuck, and held while the machining operations upon-the opposite end of the blank are performed.

lVith these and other objects in view, I have derised the novel fusel body blank which I will now describe, referring to the accoml'uinying drawing forming a part of this specification,4 and using refererure characters to indicate the several parts I I 1`igliife 1 is an elevation of' my novelA fuse body blank as completed by the for g 5ing operation; Fig. l a longitudinal section corresponding therewith; Fig. 3 an eleva- ...tion of a fini-shed fuse body, that'is'after 'the various.machining 'operations have been completed, and Fig. l is a section of a completed fuse body.

lt will be noted that the completed body comprises a threaded shank having a recess in its` base, and ahead in the form of a truncated cone, the .lower end of the head being ot"gncaterediainoter than the shank` and the. upper end of the head of less diameter than the shank. 1t will he noted furthermore A from Fig. 4 .that a number of machining operations are required to complete the body,

several of which must be performed on .the s nk end of lthe body while the headis gripped by a chuck. rl`he di-liiculty experienced 1in Vholding the .head ends of the lbody blanks while the machining operations ,were .performed on Ythe shank ends `of the blanks, has been a serious obstacle to the economical A sonia, county of New Haven, State of:

manufacture of these fuse bodies, as it was of vital importance that.` the blanks should be produced without` waste in the forging operation, and `that` the amount of metal cutaway inthe machining operations should be'y reduced tojthe minimum. After a long continued series of experiments, I succeed- .ed in developing a forged body blank-having the base recess forged therein and having a head two-thirds, more or less, of which should be forgedv to substantially its final form` merely sutlicientamount of surplus .metal to providefor perfect finishing being provided, and the tip of which should comprise a hub. shown as of approximately uniform diameter, adapted tobe gripped by-a chuck. so that the head end of the shank could be gripped firmly while the machining operations were being shank end. l

My novel body blank as formed comprises a. shank 10, having a recess l1 in its base:` la head 12 of greater diameter at its lower end than the shank, and taperingupward and inward for two-thirds more or less of its length, and above the tapered portion a hub 13 adaptedto be gripped by a chuck. lIn finishing the fuse body, the hub is first placed -in a chuck, and the various machining operations upon the sha-nk end of the body are performed while the body is held by means of the hub. After the shank end of the body has been machined, it is placed in a chuck and the necessary machining operations are performed upon the head end of the body, includingr the removal ofa portion of the metal of the hub, sufficient t0 leave the configuration 'of the head that of a perfect truncated cone.

,Having thus described my invention, 'Ie

1. A blank for a fuse body forged with a shank at one end, anda head having a portion 'in the form of a truncated cone., the base vof which is of greater diameter than that of the. shank, said head also having a. chuckvengaging portion,'tl1e base of which coin* oidos with the top of said truncated cone portion.

QL A -blank for a fuse body forged with a shank at one end, and 'a head having a portion in the. form of a truncated cone, the base of which is of greater diameter than that 0f the shank, said head also having an approxiperformed on vthe 2 i n 1,189,958 y mtely cylindrical chuck engaging portion, providing the bln-nk with'the necessary bores,

-the base of which coincides with the top4 of apertures, 4and threads, and finally shaping said truncated cone portion.' the .chuc'llz-engfxgmg portion to-conform .to '10 3.' The 'method of producing fuse bodies the taper of said bend.

a' which comprises ,forging ablank with a 1n testimony whereofI affix my signature.

shank at 'one end and acone-shaped hed provided Vwith a chuck-engaging portion, CHARLES H. JOCKMUS.- 

